I recently decided to try the lance hendrick flow control mod on my bambino plus. The installation went pretty smoothly and when I tested it, it seemed to work reasonably well (although with less fine control than I has hoping for). However I also noticed that my group head was starting to let out steam (before the water flow started) during flushing. when looking at the shower screen it did seem like there was an uneven distribution of water. I'm not sure if the mod could have something to do with this or it's a separate issue? Any advice would be much appreciated.